Disinfectant solution (copper sulfate mixed with water), kills or inhibits bacterial infections such as hairy-warts, foot-rot and heel erosion  penetrates up between toes and cracks (where bacteria inflames the soft skin), and then penetrates under the horn lining and inner surfaces of each cleat

Disinfectant solution hardens the horn and toughens the skin in vital areas between cleats of the hoof. This drying effect on the hoof and skin makes cattle's feet more resistant to bacterial infection